Chapter 14 quiz body wall

Question 1

breasts

Answer 1

• paired
• composed of adipose tissue mostly
• lactation in females

Question 2

pectoralis major mm

Answer 2

paired
-superficial and fan shaped
-

Question 3

pectoralis minor mm

Answer 3

• paired

- deep to the pectoralis major (also smaller)

Question 4

external intercostal mm

Answer 4

• 11 pairs
• between ribs (do not extend to the sternum)
• elevate the ribs (inspiratory muscles)

Question 5

internal intercostal mm

Answer 5

• 11 pairs
• between ribs
• don’t extend to the vertebral column
• depress the ribs (expiratory muscles)

Question 6

linea alba

Answer 6

midline tendinous structure that runs between the xiphoid process and the pelvis

Question 7

rectus abdominis mm

Answer 7

• paired
• muscles on either side of the linea alba
• flexes vertebral column; supports and compresses abdomen

Question 8

rectus sheath

Answer 8

• paired fibrous sheaths

- surround rectus abdominis

Question 9

tendinous intersections

Answer 9

• fibrous bands crossing the rectus abdominis producing the six pack look

Question 10

external oblique m

Answer 10

• paired
• forms V
• flexes vertebral column; when one contracts the trunk is rotated or bent laterally
• abdominal support and compression

Question 11

internal oblique

Answer 11

• paired
• forms A
• up and medially
• flexes vertebral column
• when one contracts the trun is rotated or bent laterally
• abdominal support and compression

Question 12

tranversus abdominis m

Answer 12

• paired
• deep to internal oblique
• abdominal support and compression

Question 13

serratus anterior muscle

Answer 13

• paired

- attach to the ribs and looks serrated

Question 14

diaphragm

Answer 14

dome shaped

• separates the thoracic and abdominopelvic cavities
• increases the vertical dimension of the thoracic cavity (inspiratory muscle)

Question 15

central tendon

Answer 15

• central part of the diaphragm

- composed of dense connective tissue

Question 16

trapezius m

Answer 16

-paired
-triangular
- together they form a trapezoid
extends the head

Question 17

rhomboid minor m

Answer 17

• paired
• each runs between the vertebral column and a scapula
• superior to the rhomboid major

Question 18

rhomboid major m

Answer 18

• paired

- each runs between the vertebral column and a scapula; inferior to the rhomboid minor

Question 19

levator scapulae m

Answer 19

• paired
• each runs between the vertebral column and a scapula
• contraction of one laterally bends the head to the same side

Question 20

supraspinatus m

Answer 20

• paired

- each is superior to the spine of a scapula

Question 21

infraspinatus m

Answer 21

• paired

- each in inferior to the spine of a scapula

Question 22

teres minor m

Answer 22

• paired

- each runs from a scapula to a humerus

Question 23

teres major m

Answer 23

• paired

- each runs from a scapula to a humerus

Question 24

latissimus dorsi m

Answer 24

• paired

- covers large area of the back

Question 25

erector spinae m

Answer 25

• paired
• postural muscles; acting together they extend the vertebral column or the head
• acting on one side they laterally bend the vertebral column or turn the face to the same side

Question 26

quadratus lumborum m

Answer 26

• paired
• postural muscles; acting together they extend the vertebral column
• acting on one side they lateral bend the vertebral column